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Data augmentation is a widely used technique in machine learning to improve model performance. However, existing data augmentation techniques in natural language understanding (NLU) may not fully capture the complexity of natural language…

Computation and Language · Computer Science 2023-07-06 Zhengqing Yuan , Xiaolong Zhang , Yue Wang , Xuecong Hou , Huiwen Xue , Zhuanzhe Zhao , Yongming Liu

Test-time augmentation -- the aggregation of predictions across transformed examples of test inputs -- is an established technique to improve the performance of image classification models. Importantly, TTA can be used to improve model…

Machine Learning · Computer Science 2022-06-29 Helen Lu , Divya Shanmugam , Harini Suresh , John Guttag

In recent years, pretrained neural language models (PNLMs) have taken the field of natural language processing by storm, achieving new benchmarks and state-of-the-art performances. These models often rely heavily on annotated data, which…

Computation and Language · Computer Science 2023-02-06 Hoang Van

Data augmentation has shown its effectiveness in resolving the data-hungry problem and improving model's generalization ability. However, the quality of augmented data can be varied, especially compared with the raw/original data. To boost…

Computation and Language · Computer Science 2024-09-27 Guanyi Mou , Yichuan Li , Kyumin Lee

Data augmentation has been established as an efficacious approach to supplement useful information for low-resource datasets. Traditional augmentation techniques such as noise injection and image transformations have been widely used. In…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Yuwei Yin , Jean Kaddour , Xiang Zhang , Yixin Nie , Zhenguang Liu , Lingpeng Kong , Qi Liu

We propose ERA, a new paradigm that constrains the sampling entropy above given thresholds by applying specially designed activations to the outputs of models. Our approach demonstrates broad effectiveness across different domains: 1) for…

Machine Learning · Computer Science 2025-10-13 Zilin Kang , Chonghua Liao , Tingqiang Xu , Huazhe Xu

Unsupervised Data Augmentation (UDA) is a semi-supervised technique that applies a consistency loss to penalize differences between a model's predictions on (a) observed (unlabeled) examples; and (b) corresponding 'noised' examples produced…

Computation and Language · Computer Science 2020-10-26 David Lowell , Brian E. Howard , Zachary C. Lipton , Byron C. Wallace

Deep learning-based text classification models need abundant labeled data to obtain competitive performance. Unfortunately, annotating large-size corpus is time-consuming and laborious. To tackle this, multiple researches try to use data…

Computation and Language · Computer Science 2023-02-03 Xiaotian Lin , Nankai Lin , Yingwen Fu , Ziyu Yang , Shengyi Jiang

Data augmentation is an effective solution to data scarcity in low-resource scenarios. However, when applied to token-level tasks such as NER, data augmentation methods often suffer from token-label misalignment, which leads to…

Computation and Language · Computer Science 2022-03-21 Ran Zhou , Xin Li , Ruidan He , Lidong Bing , Erik Cambria , Luo Si , Chunyan Miao

Deep neural networks have emerged as very successful tools for image restoration and reconstruction tasks. These networks are often trained end-to-end to directly reconstruct an image from a noisy or corrupted measurement of that image. To…

Image and Video Processing · Electrical Eng. & Systems 2021-06-30 Zalan Fabian , Reinhard Heckel , Mahdi Soltanolkotabi

Information theoretic quantities play a central role in machine learning. The recent surge in the complexity of data and models has increased the demand for accurate estimation of these quantities. However, as the dimension grows the…

Machine Learning · Statistics 2024-05-21 Viktor Nilsson , Anirban Samaddar , Sandeep Madireddy , Pierre Nyquist

Emotion recognition in text, the task of identifying emotions such as joy or anger, is a challenging problem in NLP with many applications. One of the challenges is the shortage of available datasets that have been annotated with emotions.…

Computation and Language · Computer Science 2023-10-31 Anna Koufakou , Diego Grisales , Ragy Costa de jesus , Oscar Fox

The recently proposed panoptic segmentation task presents a significant challenge of image understanding with computer vision by unifying semantic segmentation and instance segmentation tasks. In this paper we present an efficient and novel…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Yang Liu , Pietro Perona , Markus Meister

Data augmentation aims to enrich training samples for alleviating the overfitting issue in low-resource or class-imbalanced situations. Traditional methods first devise task-specific operations such as Synonym Substitute, then preset the…

Computation and Language · Computer Science 2021-09-03 Shuhuai Ren , Jinchao Zhang , Lei Li , Xu Sun , Jie Zhou

Data augmentation is an effective approach to tackle over-fitting. Many previous works have proposed different data augmentations strategies for NLP, such as noise injection, word replacement, back-translation etc. Though effective, they…

Computation and Language · Computer Science 2022-07-13 Le Zhang , Zichao Yang , Diyi Yang

In recent years, language models (LMs) have made remarkable progress in advancing the field of natural language processing (NLP). However, the impact of data augmentation (DA) techniques on the fine-tuning (FT) performance of these LMs has…

Computation and Language · Computer Science 2023-06-14 Zhengxiang Shi , Aldo Lipani

Nested Named Entity Recognition (NNER) focuses on addressing overlapped entity recognition. Compared to Flat Named Entity Recognition (FNER), annotated resources are scarce in the corpus for NNER. Data augmentation is an effective approach…

Computation and Language · Computer Science 2024-06-19 Xingming Liao , Nankai Lin , Haowen Li , Lianglun Cheng , Zhuowei Wang , Chong Chen

Data augmentation is widely used in text classification, especially in the low-resource regime where a few examples for each class are available during training. Despite the success, generating data augmentations as hard positive examples…

Computation and Language · Computer Science 2023-08-10 Junfan Chen , Richong Zhang , Zheyan Luo , Chunming Hu , Yongyi Mao

Data augmentation (DA) is crucial to mitigate model training instability and over-fitting problems in low-resource open-domain dialogue generation. However, traditional DA methods often neglect semantic data diversity, restricting the…

Computation and Language · Computer Science 2024-04-02 Zhenhua Liu , Tong Zhu , Jianxiang Xiang , Wenliang Chen

The increasing popularity of online services has made Internet Traffic Classification a critical field of study. However, the rapid development of internet protocols and encryption limits usable data availability. This paper addresses the…

Machine Learning · Computer Science 2024-07-24 Yehonatan Zion , Porat Aharon , Ran Dubin , Amit Dvir , Chen Hajaj